/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

package com.mudalov.rec.web.tiles.common;

import com.mudalov.rec.dao.factory.DAOFactory;
import com.mudalov.rec.dao.model.study.Material;
import com.mudalov.rec.util.webui.ResourcesHelper;
import com.mudalov.rec.util.webui.TableSelection;
import com.sun.rave.web.ui.appbase.AbstractFragmentBean;
import java.io.FileNotFoundException;
import java.io.IOException;
import javax.faces.FacesException;
import com.mudalov.rec.web.RequestBean1;
import com.mudalov.rec.web.SessionBean1;
import com.mudalov.rec.web.ApplicationBean1;
import com.mudalov.rec.web.FileUploadedListenerBean;
import com.mudalov.rec.web.FileUploadBean;
import com.sun.data.provider.RowKey;
import com.sun.webui.jsf.component.TableRowGroup;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.List;
import javax.faces.context.FacesContext;
import javax.servlet.http.HttpServletResponse;

/**
 * @version MaterialsViewFragment.java
 * @version Created on Dec 15, 2008, 1:16:59 PM
 * @author Mikhail_Udalov
 */

public class MaterialsViewFragment extends AbstractFragmentBean {
    // <editor-fold defaultstate="collapsed" desc="Managed Component Definition">

    /**
     * <p>Automatically managed component initialization. <strong>WARNING:</strong>
     * This method is automatically generated, so any user-specified code inserted
     * here is subject to being replaced.</p>
     */
    private void _init() throws Exception {
    }
    // </editor-fold>

    public MaterialsViewFragment() {
    }

    /**
     * <p>Callback method that is called whenever a page containing
     * this page fragment is navigated to, either directly via a URL,
     * or indirectly via page navigation.  Override this method to acquire
     * resources that will be needed for event handlers and lifecycle methods.</p>
     * 
     * <p>The default implementation does nothing.</p>
     */
    @Override
    public void init() {
        // Perform initializations inherited from our superclass
        super.init();
        // Perform application initialization that must complete
        // *before* managed components are initialized
        // TODO - add your own initialiation code here
        
        
        // <editor-fold defaultstate="collapsed" desc="Visual-Web-managed Component Initialization">
        // Initialize automatically managed components
        // *Note* - this logic should NOT be modified
        try {
            _init();
        } catch (Exception e) {
            log("Page1 Initialization Failure", e);
            throw e instanceof FacesException ? (FacesException) e: new FacesException(e);
        }
        
        // </editor-fold>
        // Perform application initialization that must complete
        // *after* managed components are initialized
        // TODO - add your own initialization code here
        factory = DAOFactory.getFactory(getSessionBean1().getDaoFactoryClass());
    }

    /**
     * <p>Callback method that is called after rendering is completed for
     * this request, if <code>init()</code> was called.  Override this
     * method to release resources acquired in the <code>init()</code>
     * resources that will be needed for event handlers and lifecycle methods.</p>
     * 
     * <p>The default implementation does nothing.</p>
     */
    @Override
    public void destroy() {
    }

    /**
     * <p>Return a reference to the scoped data bean.</p>
     *
     * @return reference to the scoped data bean
     */
    protected RequestBean1 getRequestBean1() {
        return (RequestBean1) getBean("RequestBean1");
    }

    /**
     * <p>Return a reference to the scoped data bean.</p>
     *
     * @return reference to the scoped data bean
     */
    protected SessionBean1 getSessionBean1() {
        return (SessionBean1) getBean("SessionBean1");
    }

    /**
     * <p>Return a reference to the scoped data bean.</p>
     *
     * @return reference to the scoped data bean
     */
    protected ApplicationBean1 getApplicationBean1() {
        return (ApplicationBean1) getBean("ApplicationBean1");
    }

    /**
     * <p>Return a reference to the scoped data bean.</p>
     *
     * @return reference to the scoped data bean
     */
    protected FileUploadedListenerBean getFileUploadedListenerBean() {
        return (FileUploadedListenerBean) getBean("FileUploadedListenerBean");
    }

    /**
     * <p>Return a reference to the scoped data bean.</p>
     *
     * @return reference to the scoped data bean
     */
    protected FileUploadBean getFileUploadBean() {
        return (FileUploadBean) getBean("FileUploadBean");
    }

    private String nameParam;
    
    private String subjectParam;
    
    private String ownerParam;

    private DAOFactory factory;

    private TableRowGroup materialsRowGroup;

    private TableSelection select = new TableSelection("currentRow");

    public TableSelection getSelect() {
        return select;
    }

    public void setSelect(TableSelection select) {
        this.select = select;
    }

    public String getNameParam() {
        return nameParam != null ? nameParam : "";
    }

    public void setNameParam(String nameParam) {
        this.nameParam = nameParam;
    }

    public String getOwnerParam() {
        return ownerParam != null ? ownerParam : "";
    }

    public void setOwnerParam(String ownerParam) {
        this.ownerParam = ownerParam;
    }

    public String getSubjectParam() {
        return subjectParam != null ? subjectParam : "";
    }

    public void setSubjectParam(String subjectParam) {
        this.subjectParam = subjectParam;
    }

    public TableRowGroup getMaterialsRowGroup() {
        return materialsRowGroup;
    }

    public void setMaterialsRowGroup(TableRowGroup materialsRowGroup) {
        this.materialsRowGroup = materialsRowGroup;
    }

    public String downloadMaterial() {
        RowKey[] selectedKeys = getMaterialsRowGroup().getSelectedRowKeys();
        if (selectedKeys != null && selectedKeys.length > 0) {
            int index = Integer.parseInt(selectedKeys[0].getRowId());
            Material material = getSessionBean1().getCurrentMaterials().get(index);
            try {
                downloadMaterial(material);
            } catch (Exception ex) {
                ex.printStackTrace();
            }
            return null;
        } else {
            return null;
        }
    }

    public String searchMaterials() {
        List<Material> materials = factory.getMaterialDAO()
                .getMaterials(getNameParam(), getOwnerParam(), getSubjectParam());
        getSessionBean1().setCurrentMaterials(materials);
        return null;
    }

    private void downloadMaterial(Material material) throws FileNotFoundException, IOException {
        byte[] bytes = new byte[1000];
        int read = 0;
        File file = new File(material.getLocation());
        InputStream in = new FileInputStream(file);

        HttpServletResponse response = (HttpServletResponse)FacesContext
                .getCurrentInstance()
                .getExternalContext()
                .getResponse();
        if (ResourcesHelper.getFileType(material.getFileName())
                == ResourcesHelper.DocumentType.WORD) {
            response.setContentType("application/msword");
        } else {
            // excel
            response.setContentType("application/vnd.ms-excel");
        }
        response.setHeader("Content-disposition", "attachment; filename=" + material.getFileName());
        OutputStream out = response.getOutputStream();
        while ((read = in.read(bytes)) != -1) {
            out.write(bytes, 0, read);
        }
        out.flush();
        out.close();
    }
}
